University of Iowa researchers found in a new study that images of Earth that kindle "blue marble awe" could create more favorable views of renewable energy and the environment.

Visit Underwater Photography Guide for a full gallery of winners. (Click to expand images.) Breakthroughs, discoveries, and DIY tips sent every weekday.

Less than a week after its launch, the Copernicus Sentinel-1C satellite has delivered its first radar images of Earth—offering a glimpse into its capabilities for environmental monitoring.